Skeg Protector Guard for Mercury/Mariner 75–300 HP 2-Stroke and 4-Stroke Outboards – Replaces OEM 27211
Skeg Protector Guard for Mercury/Mariner 75–300 HP 2-Stroke and 4-Stroke Outboards – Replaces OEM 27211 is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
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Skeg Protector Guard for Mercury/Mariner 75–300 HP 2-Stroke and 4-S...
Skeg Protector Guard for Mercury/Mariner 75–300 HP 2-Stroke and 4-Stroke Outboards – Replaces OEM 27211 is backordered and will ship as soon as it is back in stock.
Product Details
Protect your outboard motor's lower unit with this marine-grade Skeg Protector Guard. It is designed for a range of Mercury and Mariner 75–300 HP 2-Stroke and 4-Stroke outboards, including selected Command Thrust, SeaPro, Verado, Optimax, ProXS, and PRO Verado applications. Compatibility depends on the engine model, gearcase configuration, horsepower, stroke, and production year.
This aftermarket guard is intended as a replacement for Mercury/Mariner OEM part number 27211. It is not an OEM-manufactured component. Torquemaster gearcases are excluded.
- Bolt-on installation using the supplied mounting hardware.
- Constructed from tough 18-gauge 316 marine-grade stainless steel.
- Mirror-polished finish for durability and corrosion resistance in a marine environment.
- Includes a reinforced wear tab and drain hole to help reduce water retention.
Part Number Matrix
Use the reference below to compare the applicable OEM number with this replacement guard.
| Brand | Part Number |
|---|---|
| Mercury/Mariner | 27211 |
Engine & Model Compatibility
The applications below reflect the listed model, horsepower, stroke, and year conditions. Confirm your engine model and gearcase configuration before ordering. A model name or horsepower alone does not establish fitment.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury/Mariner | Command Thrust | 75–115 | 4-Stroke | 2014–Present | 27211 | Confirm gearcase configuration. |
| Mercury/Mariner | SeaPro | 75–115 | 4-Stroke | 2014–Present | 27211 | Confirm gearcase configuration. |
| Mercury/Mariner | Verado | 135–225 | 4-Stroke | 2005–2018 | 27211 | Confirm gearcase configuration. |
| Mercury/Mariner | ProXS | 150 | 4-Stroke | 2019–Present | 27211 | Confirm gearcase configuration. |
| Mercury/Mariner | SeaPro | 150 | 4-Stroke | 2019–Present | 27211 | Confirm gearcase configuration. |
| Mercury/Mariner | Optimax | 200–250 | 2-Stroke | 1999–2018 | 27211 | Not for Torquemaster gearcases. |
| Mercury/Mariner | ProXS | 200–250 | 2-Stroke | 1999–2018 | 27211 | Not for Torquemaster gearcases. |
| Mercury/Mariner | PRO Verado | 200–300 | 4-Stroke | 2015–2018 | 27211 | For 4.8-inch gearcase applications. |
| Mercury/Mariner | 2-Stroke | 225 | 2-Stroke | 1996–2004 | 27211 | Confirm the exact gearcase before ordering. |
Technical Specs
- Product Type
- Skeg Protector Guard
- Installation
- Bolt-on
- Connection
- Self-locking bolts
- Housing Material
- 18-gauge marine-grade 316 stainless steel
- Housing Color
- Mirror-polished stainless steel
- Dimensions
- Specific to the compatible skeg and gearcase configuration
- Weight
- 0.71 kg (1.57 lbs)
- Fitting Type
- Skeg-conforming sleeve
- Thread Size
- 1/4 inch
- Operating Environment
- Marine environment
- Additional Features
- 3 mm reinforced wear tab and drain hole to help reduce trapped water
What’s in the Box
- 1 x Skeg Protector Guard
- 1 x Set of stainless steel self-locking hardware
- 1 x 1/4-inch drill bit
- 1 x Hex key tool
Installation Notes
- Ensure the engine is switched off and the drive is tilted up and secured. Disconnect the battery for additional safety.
- Confirm that at least 2–3 inches of the original skeg remains. Clean the skeg and remove debris or marine growth.
- Slide the guard sleeve completely onto the existing skeg until it sits securely.
- Mark the two mounting-hole locations through the side holes in the guard.
- Remove the guard and carefully drill the marked locations using the supplied 1/4-inch drill bit.
- Remove all metal shavings and burrs from the drilled holes.
- Reinstall the guard and align the mounting holes.
- Insert the self-locking bolts and tighten them evenly with the supplied hex key until snug. Do not over-tighten.
- Inspect the guard and fasteners before returning the boat to service.
Troubleshooting & FAQ
How much of my original skeg do I need for this to fit?
At least 2–3 inches of the original skeg should remain for the guard to seat securely. Severely damaged or substantially missing skegs may require repair or professional assessment before installation.
Will this fit my Torquemaster gearcase?
No. This guard is not listed for Torquemaster gearcases. Confirm your gearcase type as well as your engine model, horsepower, stroke, and year before ordering.
What is the guard made of?
The guard is made from 18-gauge, marine-grade 316 stainless steel with a mirror-polished finish.
What does the reinforced wear tab do?
The reinforced wear tab adds material at the lower portion of the guard to help protect the skeg from grounding, impact, and abrasion.
Is drilling required for installation?
Yes. Installation requires two 1/4-inch holes to be drilled through the skeg. The drill bit, self-locking hardware, and hex key are included.
How does the design help reduce corrosion?
The drain hole allows water to escape instead of remaining trapped inside the guard. Proper cleaning and inspection are still necessary for long-term marine service.
Is this an OEM component?
No. This is an aftermarket replacement guard intended for applications using Mercury/Mariner OEM part number 27211.
What should I confirm before ordering?
Verify the engine brand, exact model, rated horsepower, stroke, production year, gearcase configuration, and the amount of skeg remaining. Do not rely on horsepower alone to confirm fitment.
What are the shipping and return terms?
Shipping, warranty, and returns are subject to the current store policies shown at checkout and in the applicable policy pages.
Safety & Important Information
- Verify the engine and gearcase details against the compatibility table before purchase.
- Do not install this guard on a Torquemaster gearcase.
- Ensure the original skeg has sufficient remaining material for a secure fit.
- Wear appropriate eye protection when drilling and remove all metal shavings before use.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended when the skeg is heavily damaged or the gearcase configuration is uncertain.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts selected for demanding real-world conditions.
- Global Fulfillment — Shipping options and delivery estimates are shown at checkout where available.
- Manufacturer-Direct Value — Practical replacement parts focused on materials, fit, and dependable service.
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